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DH40 Dehumidifier - Instructions

Installation Instructions for parts on models starting with DH40

These instructions have been submitted by other PartSelect customers and can help guide you through the dehumidifier repair with useful information like difficulty of repair, length of repair, tools needed, and more.

The Origional Humidistat Quit Working

The knob one turns to set the humidity level was removed. The two screws holding the top on were removed. The top was lifted and swung to the side. After noting which of the two wires went where on the humidistat the wires were removed. Small flat screwdrivers were used to pry back the plastic retainers on one side of the original failed humidistat. The new one was put in place, the two wires were reattached. The knob was replaced. The top was positioned and its two retaining screws replaced. A magnetic phillips screwdriver was handy but not necessary. Piece of cake! Someone with ten thumbs could do it!! Thanks for the prompt courteous attention to the returned erroneous part! Dealing with partselect. Com was a pleasure. . . . . . Thanks!! P. S. The dehumidifier works like new now!!

Troubleshoot on the schematic/wiring diagram to find the defective thermostat. Order a replacement part. Remove all outer covers to gain access to the thermostat. Only tool needed for this is a #2 phillips screwdriver. Cut the leads on the defective part and remove thermostat and replace thermostat, wire cutters/crimper required, splice the thermostat leads, Reassemble the outer covers.

The old blade separated from the shaft.

Removed all screws from the outside case, then I had access to the motor. Removed 4 screws from the bracket holding the motor assembly in place, removed it from the case. Next I pulled off the broken fan part, installed the new blade and secured it with the supplied bracket. Next I installed the motor assembly in reverse with the 4 screws I removed earlier. I made sure the blade would move freely, no wire in the way. Also, when you remove the motor assembly you will have to remove the motor wires from their attachment points, but is easy, they are just "plugged" in. In any case I recommend you make a small drawing/schematic as to where the wires go for proper hookup later. The last thing is to put the case cover back on, line up the holes and insert the screws you removed earlier. The unit has been running like new now!!

bucket full light constantly blinking with error code 01 on the display

Unscrew and detached front and back panels, and inside framework holding the sheet metal to the body, after removing the sheet metal, unscrew the box enclosing the control board, use needle nose pliers to unhook the sensor module from the board and place the new sensor into the spots where the old sensor was connected (thermostat area, humidity Sensor, bucket switch, and control board). Close up the unit and your good to go.

bucket full light was blinking and dehumidifier would run for a few seconds then turn off

remove outer shell and control panel. take cover off off electrical connection box. remove old sensor from front of condensing coil along with wiring harness to temperature sensor and bucket switch and circuit board. reinstall new sensor in the reverse procedure. reinstall covers.

Flashing light to empty bucket when not the case.

Replaced the sensor and solved the problem. I had a lot of difficulty with the case holding the circuit board,etc because no easy way to service. Seemes they could have made it easier with a removable panel. I actually cut the wires and re-attached the thermister later after routing. Did not use the other parts of the wiring.

Push on connectors and switch housing were different

The switch housing was not exactly the same for easy snap in. I removed the actual switch and installed it into the old housing. Then I found that the male pins were larger than the old ones. I chose to clip off the female connectores, strip the wires, and solder the wires to the pins on the switch. It was easier for me than attempting to change the push on connectors. For me, the actual switch was what I wanted and I fixed it my way. It was easy to do however some folks may want to change the push on connectors. Works great and saved me hundreds of dollars. Thanks.

Fan motor not operating correctly--difficuft to turn by hand.

(1) Compared old an new motors to ensure compatability. (2) Removed old motor from frame. (3) Mounted new motor to frame. This was the easy part...took a couple of minutes. The tricky part was the wiring--because of how the original motor had been wired into the appliance, I ended up splicing the new motor wires into the old motor end-clips (left them connected the whole time)...took over half hour. Now if I can only figure out a way to keep the fan from working out along the shaft and hitting the radiator, I will be very happy (this seems to be annual repair).